I personally saw it before. Chu Liuyue did not say this sentence.
Su Li's expression doesn't seem fake. What kind of amazing existence is she? Countless true gods and legendary warriors are willing to follow her. Since she has said so, it is most likely true. But if that is really the case, then… What's with Big Baby?
Chu Liuyue remembered clearly that he reformed his Holy Body in the Red Moon Desert himself! Additionally, to save her, he even crafted the appearance of a child in a hurry.
To mention external forces… Big Baby used her blood at the last moment.
However, Chu Liuyue did not take this matter to heart. From the three seniors' reactions, they never wanted her help since the beginning. They planned to reform their Holy Bodies themselves!
This caused Chu Liuyue to think that everyone was the same. But after hearing Su Li's words, she then realized that her understanding seemed to be wrong.